obj += 01atexit
obj += 02mydate
obj += 03env
obj += 04getenv
obj += 05jump

CFLAGS += -Wall 
CFLAGS += -D_FILE_OFFSET_BITS=64

all: $(obj).c
	for i in $(obj);do\
		gcc $$i.c -o $$i $(CFLAGS);\
	done
clean:
	rm $(obj)
